org.jdom.output
Class SAXOutputter

java.lang.Object
  org.jdom.output.SAXOutputter

public class SAXOutputter
extends java.lang.Object

Outputs a JDOM document as a stream of SAX2 events.

Most ContentHandler callbacks are supported. Both ignorableWhitespace() and skippedEntity() have not been implemented. The JDOMLocator class returned by getLocator() exposes the current node being operated upon.

At this time, it is not possible to access notations and unparsed entity references in a DTD from JDOM. Therefore, DTDHandler callbacks have not been implemented yet.

The ErrorHandler callbacks have not been implemented, since these are supposed to be invoked when the document is parsed and at this point the document exists in memory and is known to have no errors.

Version:

$Revision: 1.1 $, $Date: 2012/04/08 22:48:01 $

Author:

Brett McLaughlin, Jason Hunter, Fred Trimble, Bradley S. Huffman

Constructor Summary

SAXOutputter()
This will create a SAXOutputter without any registered handler.

SAXOutputter(org.xml.sax.ContentHandler contentHandler)
This will create a SAXOutputter with the specified ContentHandler.

SAXOutputter(org.xml.sax.ContentHandler contentHandler, org.xml.sax.ErrorHandler errorHandler, org.xml.sax.DTDHandler dtdHandler, org.xml.sax.EntityResolver entityResolver)
This will create a SAXOutputter with the specified SAX2 handlers.

SAXOutputter(org.xml.sax.ContentHandler contentHandler, org.xml.sax.ErrorHandler errorHandler, org.xml.sax.DTDHandler dtdHandler, org.xml.sax.EntityResolver entityResolver, org.xml.sax.ext.LexicalHandler lexicalHandler)
This will create a SAXOutputter with the specified SAX2 handlers.

Method Summary

protected org.xml.sax.XMLReader	createParser() Creates a SAX XMLReader.
org.xml.sax.ContentHandler	getContentHandler() Returns the registered ContentHandler.
org.xml.sax.ext.DeclHandler	getDeclHandler() Return the registered DeclHandler.
org.xml.sax.DTDHandler	getDTDHandler() Return the registered DTDHandler.
org.xml.sax.EntityResolver	getEntityResolver() Return the registered EntityResolver.
org.xml.sax.ErrorHandler	getErrorHandler() Return the registered ErrorHandler.
boolean	getFeature(java.lang.String name) This will look up the value of a SAX feature.
org.xml.sax.ext.LexicalHandler	getLexicalHandler() Return the registered LexicalHandler.
JDOMLocator	getLocator() Returns a JDOMLocator object referencing the node currently being processed by this outputter.
java.lang.Object	getProperty(java.lang.String name) This will look up the value of a SAX property.
boolean	getReportDTDEvents() Returns whether DTD events will be reported.
boolean	getReportNamespaceDeclarations() Returns whether attribute namespace declarations shall be reported as "xmlns" attributes.
void	output(Document document) This will output the JDOM Document, firing off the SAX events that have been registered.
void	output(Element node) This will output a single JDOM element as a document, firing off the SAX events that have been registered.
void	output(java.util.List nodes) This will output a list of JDOM nodes as a document, firing off the SAX events that have been registered.
void	outputFragment(Content node) This will output a single JDOM nodes as a fragment of an XML document, firing off the SAX events that have been registered.
void	outputFragment(java.util.List nodes) This will output a list of JDOM nodes as a fragment of an XML document, firing off the SAX events that have been registered.
void	setContentHandler(org.xml.sax.ContentHandler contentHandler) This will set the ContentHandler.
void	setDeclHandler(org.xml.sax.ext.DeclHandler declHandler) This will set the DeclHandler.
void	setDTDHandler(org.xml.sax.DTDHandler dtdHandler) This will set the DTDHandler.
void	setEntityResolver(org.xml.sax.EntityResolver entityResolver) This will set the EntityResolver.
void	setErrorHandler(org.xml.sax.ErrorHandler errorHandler) This will set the ErrorHandler.
void	setFeature(java.lang.String name, boolean value) This will set the state of a SAX feature.
void	setLexicalHandler(org.xml.sax.ext.LexicalHandler lexicalHandler) This will set the LexicalHandler.
void	setProperty(java.lang.String name, java.lang.Object value) This will set the value of a SAX property.
void	setReportDTDEvents(boolean reportDtdEvents) This will define whether to report DTD events to SAX DeclHandlers and LexicalHandlers if these handlers are registered and the document to output includes a DocType declaration.
void	setReportNamespaceDeclarations(boolean declareNamespaces) This will define whether attribute namespace declarations shall be reported as "xmlns" attributes.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

SAXOutputter

public SAXOutputter()

This will create a SAXOutputter without any registered handler. The application is then responsible for registering them using the setXxxHandler() methods.

SAXOutputter

public SAXOutputter(org.xml.sax.ContentHandler contentHandler)

This will create a SAXOutputter with the specified ContentHandler.

Parameters:

contentHandler - contains ContentHandler callback methods

SAXOutputter

public SAXOutputter(org.xml.sax.ContentHandler contentHandler,
                    org.xml.sax.ErrorHandler errorHandler,
                    org.xml.sax.DTDHandler dtdHandler,
                    org.xml.sax.EntityResolver entityResolver)

This will create a SAXOutputter with the specified SAX2 handlers. At this time, only ContentHandler and EntityResolver are supported.

Parameters:

contentHandler - contains ContentHandler callback methods

errorHandler - contains ErrorHandler callback methods

dtdHandler - contains DTDHandler callback methods

entityResolver - contains EntityResolver callback methods

SAXOutputter

public SAXOutputter(org.xml.sax.ContentHandler contentHandler,
                    org.xml.sax.ErrorHandler errorHandler,
                    org.xml.sax.DTDHandler dtdHandler,
                    org.xml.sax.EntityResolver entityResolver,
                    org.xml.sax.ext.LexicalHandler lexicalHandler)

This will create a SAXOutputter with the specified SAX2 handlers. At this time, only ContentHandler and EntityResolver are supported.

Parameters:

contentHandler - contains ContentHandler callback methods

errorHandler - contains ErrorHandler callback methods

dtdHandler - contains DTDHandler callback methods

entityResolver - contains EntityResolver callback methods

lexicalHandler - contains LexicalHandler callbacks.

Method Detail

setContentHandler

public void setContentHandler(org.xml.sax.ContentHandler contentHandler)

This will set the ContentHandler.

Parameters:

contentHandler - contains ContentHandler callback methods.

getContentHandler

public org.xml.sax.ContentHandler getContentHandler()

Returns the registered ContentHandler.

Returns:

the current ContentHandler or null if none was registered.

setErrorHandler

public void setErrorHandler(org.xml.sax.ErrorHandler errorHandler)

This will set the ErrorHandler.

Parameters:

errorHandler - contains ErrorHandler callback methods.

getErrorHandler

public org.xml.sax.ErrorHandler getErrorHandler()

Return the registered ErrorHandler.

Returns:

the current ErrorHandler or null if none was registered.

setDTDHandler

public void setDTDHandler(org.xml.sax.DTDHandler dtdHandler)

This will set the DTDHandler.

Parameters:

dtdHandler - contains DTDHandler callback methods.

getDTDHandler

public org.xml.sax.DTDHandler getDTDHandler()

Return the registered DTDHandler.

Returns:

the current DTDHandler or null if none was registered.

setEntityResolver

public void setEntityResolver(org.xml.sax.EntityResolver entityResolver)

This will set the EntityResolver.

Parameters:

entityResolver - contains EntityResolver callback methods.

getEntityResolver

public org.xml.sax.EntityResolver getEntityResolver()

Return the registered EntityResolver.

Returns:

the current EntityResolver or null if none was registered.

setLexicalHandler

public void setLexicalHandler(org.xml.sax.ext.LexicalHandler lexicalHandler)

This will set the LexicalHandler.

Parameters:

lexicalHandler - contains lexical callback methods.

getLexicalHandler

public org.xml.sax.ext.LexicalHandler getLexicalHandler()

Return the registered LexicalHandler.

Returns:

the current LexicalHandler or null if none was registered.

setDeclHandler

public void setDeclHandler(org.xml.sax.ext.DeclHandler declHandler)

This will set the DeclHandler.

Parameters:

declHandler - contains declaration callback methods.

getDeclHandler

public org.xml.sax.ext.DeclHandler getDeclHandler()

Return the registered DeclHandler.

Returns:

the current DeclHandler or null if none was registered.

getReportNamespaceDeclarations

public boolean getReportNamespaceDeclarations()

Returns whether attribute namespace declarations shall be reported as "xmlns" attributes.

Returns:

whether attribute namespace declarations shall be reported as "xmlns" attributes.

setReportNamespaceDeclarations

public void setReportNamespaceDeclarations(boolean declareNamespaces)

This will define whether attribute namespace declarations shall be reported as "xmlns" attributes. This flag defaults to false and behaves as the "namespace-prefixes" SAX core feature.

Parameters:

declareNamespaces - whether attribute namespace declarations shall be reported as "xmlns" attributes.

getReportDTDEvents

public boolean getReportDTDEvents()

Returns whether DTD events will be reported.

Returns:

whether DTD events will be reported

setReportDTDEvents

public void setReportDTDEvents(boolean reportDtdEvents)

This will define whether to report DTD events to SAX DeclHandlers and LexicalHandlers if these handlers are registered and the document to output includes a DocType declaration.

Parameters:

reportDtdEvents - whether to notify DTD events.

setFeature

public void setFeature(java.lang.String name,
                       boolean value)
                throws org.xml.sax.SAXNotRecognizedException,
                       org.xml.sax.SAXNotSupportedException

This will set the state of a SAX feature.

All XMLReaders are required to support setting to true and to false.

SAXOutputter currently supports the following SAX core features:

http://xml.org/sax/features/namespaces

description: true indicates namespace URIs and unprefixed local names for element and attribute names will be available

access: read/write, but always true!

http://xml.org/sax/features/namespace-prefixes

description: true indicates XML 1.0 names (with prefixes) and attributes (including xmlns* attributes) will be available

access: read/write

http://xml.org/sax/features/validation

description: controls whether SAXOutputter is reporting DTD-related events; if true, the DocType internal subset will be parsed to fire DTD events

access: read/write, defaults to true

Parameters:

name - String the feature name, which is a fully-qualified URI.

value - boolean the requested state of the feature (true or false).

Throws:

org.xml.sax.SAXNotRecognizedException - when SAXOutputter does not recognize the feature name.

org.xml.sax.SAXNotSupportedException - when SAXOutputter recognizes the feature name but cannot set the requested value.

getFeature

public boolean getFeature(java.lang.String name)
                   throws org.xml.sax.SAXNotRecognizedException,
                          org.xml.sax.SAXNotSupportedException

This will look up the value of a SAX feature.

Parameters:

name - String the feature name, which is a fully-qualified URI.

Returns:

boolean the current state of the feature (true or false).

Throws:

org.xml.sax.SAXNotRecognizedException - when SAXOutputter does not recognize the feature name.

org.xml.sax.SAXNotSupportedException - when SAXOutputter recognizes the feature name but determine its value at this time.

setProperty

public void setProperty(java.lang.String name,
                        java.lang.Object value)
                 throws org.xml.sax.SAXNotRecognizedException,
                        org.xml.sax.SAXNotSupportedException

This will set the value of a SAX property. This method is also the standard mechanism for setting extended handlers.

SAXOutputter currently supports the following SAX properties:

http://xml.org/sax/properties/lexical-handler

data type: org.xml.sax.ext.LexicalHandler

description: An optional extension handler for lexical events like comments.

access: read/write

http://xml.org/sax/properties/declaration-handler

data type: org.xml.sax.ext.DeclHandler

description: An optional extension handler for DTD-related events other than notations and unparsed entities.

access: read/write

Parameters:

name - String the property name, which is a fully-qualified URI.

value - Object the requested value for the property.

Throws:

org.xml.sax.SAXNotRecognizedException - when SAXOutputter does not recognize the property name.

org.xml.sax.SAXNotSupportedException - when SAXOutputter recognizes the property name but cannot set the requested value.

getProperty

public java.lang.Object getProperty(java.lang.String name)
                             throws org.xml.sax.SAXNotRecognizedException,
                                    org.xml.sax.SAXNotSupportedException

This will look up the value of a SAX property.

Parameters:

name - String the property name, which is a fully-qualified URI.

Returns:

Object the current value of the property.

Throws:

org.xml.sax.SAXNotRecognizedException - when SAXOutputter does not recognize the property name.

org.xml.sax.SAXNotSupportedException - when SAXOutputter recognizes the property name but cannot determine its value at this time.

output

public void output(Document document)
            throws JDOMException

This will output the JDOM Document, firing off the SAX events that have been registered.

Parameters:

document - JDOM Document to output.

Throws:

JDOMException - if any error occurred.

output

public void output(java.util.List nodes)
            throws JDOMException

This will output a list of JDOM nodes as a document, firing off the SAX events that have been registered.

Warning: This method may output ill-formed XML documents if the list contains top-level objects that are not legal at the document level (e.g. Text or CDATA nodes, multiple Element nodes, etc.). Thus, it should only be used to output document portions towards ContentHandlers capable of accepting such ill-formed documents (such as XSLT processors).

Parameters:

nodes - List of JDOM nodes to output.

Throws:

JDOMException - if any error occurred.

See Also:

output(org.jdom.Document)

output

public void output(Element node)
            throws JDOMException

This will output a single JDOM element as a document, firing off the SAX events that have been registered.

Parameters:

node - the Element node to output.

Throws:

JDOMException - if any error occurred.

outputFragment

public void outputFragment(java.util.List nodes)
                    throws JDOMException

This will output a list of JDOM nodes as a fragment of an XML document, firing off the SAX events that have been registered.

Warning: This method does not call the ContentHandler.setDocumentLocator(org.xml.sax.Locator), ContentHandler.startDocument() and ContentHandler.endDocument() callbacks on the ContentHandler. The user shall invoke these methods directly prior/after outputting the document fragments.

Parameters:

nodes - List of JDOM nodes to output.

Throws:

JDOMException - if any error occurred.

See Also:

outputFragment(org.jdom.Content)

outputFragment

public void outputFragment(Content node)
                    throws JDOMException

This will output a single JDOM nodes as a fragment of an XML document, firing off the SAX events that have been registered.

Warning: This method does not call the ContentHandler.setDocumentLocator(org.xml.sax.Locator), ContentHandler.startDocument() and ContentHandler.endDocument() callbacks on the ContentHandler. The user shall invoke these methods directly prior/after outputting the document fragments.

Parameters:

node - the Content node to output.

Throws:

JDOMException - if any error occurred.

See Also:

outputFragment(java.util.List)

createParser

protected org.xml.sax.XMLReader createParser()
                                      throws java.lang.Exception

Creates a SAX XMLReader.

Returns:

XMLReader a SAX2 parser.

Throws:

java.lang.Exception - if no parser can be created.

getLocator

public JDOMLocator getLocator()

Returns a JDOMLocator object referencing the node currently being processed by this outputter. The returned object is a snapshot of the location information and can thus safely be memorized for later use.

This method allows direct access to the location information maintained by SAXOutputter without requiring to implement XMLFilter. (In SAX, locators are only available though the ContentHandler interface).

Note that location information is only available while SAXOutputter is outputting nodes. Hence this method should only be used by objects taking part in the output processing such as ErrorHandlers.

Returns:

a JDOMLocator object referencing the node currently being processed or null if no output operation is being performed.